Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 134, Issue 49, Pages 20025-20028Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja310283f
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Funding
- Ministry of Science and Technology [2009CB623601, 2013CB933501]
- National Natural Science Foundation of China
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Ambipolar transport behavior in isoindigo-based conjugated polymers is observed for the first time. Fluorination on the isoindigo unit effectively lowers the LUMO level of the polymer and significantly increases the electron mobility from 10(-2) to 0.43 cm(2) V-1 s(-1) while maintaining high hole mobility up to 1.85 cm(2) V-1 s(-1) for FET devices fabricated in ambient. Further investigation indicates that fluorination also affects the interchain interactions of polymer backbones, thus leading to different polymer packing in thin films.
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